Santiago believes Luy's list is more “definitive and substantiated” compared to the “spurious documents that are inadmissible in evidence” claimed by the three.

She is referring to a report of the Philippine Daily Inquirer, which claimed that Luy has back-up files of the names with links to Napoles.

“The Inquirer discovered that close to 200 people, including lawmakers, department heads, a former Supreme Court justice, popular media personalities, heads of government-owned and -controlled corporations, government employees of various agencies, local government officials, lawyers, military officials, show-biz personalities, employees of the Senate and the House of Representatives, and private individuals received money from Napoles based on the records of Benhur,” the news report reads.

Luy supposedly copied the file from a laptop of Napoles.

In a letter to Senator Teofisto Guingona III, Santiago said: “It appears to me, as a former RTC judge, that each person claiming to have a list might be acting in concert as attack dogs, for one or all three senators indicted for plunder.”

She took note of the statements of President Aquino in Myanmar. Aquino said he has seen both the Napoles and Lacson lists. He said the lists differed, expressing suspicion that certain quarters are trying to cloud the issue.

“In particular, Lacson’s claim that his big reveal might destroy public trust in the Senate, is an audible symptom of someone apparently suffering from megalomania and other grave disorders,” she said.

Luy's list, on the other hand, would be admissible as evidence, Santiago said.

She said the list could be admitted as “commercial lists and the like, which are considered admissible,” as tending to prove the truth of any relevant matter.

She said Lacson’s ploy “should be instantly denounced as a feeble attempt to terrorize Congress into submission to his disordered scenario.”